. ♪ chevron has been developing energy here for decades. we need to protect their environment. we have a strict quarantine system to protect the integrity of the environment. forty years on, it's still a class-a nature reserve. it's our job to look after them. ...it's my job to look after it. ♪ >> mr. bowen. >> i am very grateful to the commission to be able to give my testimony today. >> the financial crisis inquiry commission thought enough of richard bowen's story to call him as one of its first witnesses, and he turned over more than a thousand pages of documents to the securities and exchange commission. nothing ever came of it. but bowen wasn't the only one to warn citigroup's top officials about its financial weaknesses and breakdowns in the company's internal controls. three months after bowen's email, citigroup's new ceo vikram pandit received a blistering letter from the office of the comptroller of the currency, its chief regulator. it questioned the valuations that citi had placed on its mortgage securities and found internal controls deeply flawed. the letter sta